PT100019B - FOOD PREPARATION APPARATUS, SUCH AS A DOMESTIC FORCE - Google Patents

FOOD PREPARATION APPARATUS, SUCH AS A DOMESTIC FORCE Download PDF

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Publication number
PT100019B
PT100019B PT100019A PT10001992A PT100019B PT 100019 B PT100019 B PT 100019B PT 100019 A PT100019 A PT 100019A PT 10001992 A PT10001992 A PT 10001992A PT 100019 B PT100019 B PT 100019B
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PT
Portugal
Prior art keywords
enclosure
cage
wall
tubular casing
preparing food
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PT100019A
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Portuguese (pt)
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PT100019A (en
Inventor
Pierre Chartrain
Bernard Marcel Bois
Original Assignee
Moulinex Sa
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Filing date
Publication date
Application filed by Moulinex Sa filed Critical Moulinex Sa
Publication of PT100019A publication Critical patent/PT100019A/en
Publication of PT100019B publication Critical patent/PT100019B/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0071—Heating devices using lamps for domestic applications
    • H05B3/0076—Heating devices using lamps for domestic applications for cooking, e.g. in ovens

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Resistance Heating (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Thermistors And Varistors (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Confectionery (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

Cooking apparatus such as, for example, an oven includes a cooking chamber (1) having at least one electrical heating element (9) having a tubular envelope (10) of fragile material of the type of quartz or glass which is mounted in supports (16, 17) secured to the chamber (1) so as to maintain the envelope (10) at a distance from the internal wall of the chamber. The tubular envelope (10) is enclosed in a cage (18) whose wall (19) is sufficiently pierced to let pass the infrared radiation toward the interior of the chamber (1) and sufficiently rigid to resist any mechanical shock. The cage (18) is provided with members (24, 25) for securing it to the internal wall of the chamber (1).

Description

GSPGSP

A presente invenção refere-se aos aparelhos para a preparação de alimentos tais como, por exemplo, fornos que compreendem um recinto fechado para preparação de alimentos aberta na sua face dianteira e que compreende pelo menos um elemento eléctrico de aquecimento cota um invólucro tubular de material frágil do tipo de quartzo ou de vidro, que contém um fio oalefactor e cujas extremidades estão ligadas respectivamente a dois tampões dispostos cada um numa extremidade do invólucro, estando cada tampão adaptado para ser montado num suporte a uma certa distância da parede interior do recinto.The present invention relates to apparatus for preparing food such as, for example, ovens which comprise a closed food preparation room open on its front face and which comprises at least one electrical heating element with a tubular housing made of material fragile of the type of quartz or glass, which contains an oalefactor wire and whose ends are connected respectively to two plugs each arranged at one end of the enclosure, each plug being adapted to be mounted on a support at a certain distance from the interior wall of the enclosure.

Até agora, nos fornos (ou grelhas) deste género, o elemento eléctrico com invólucro frágil ficava saliente no recinto correndo o risco de ser danificado quandoUntil now, in ovens (or grids) of this kind, the electrical element with a fragile housing protruded from the room, at the risk of being damaged when

o utilizador manipula sem precaução a travessa ou tabuleiro do alimento a oozer, ou então quanto procede à lavagem do recinto. Isso é mais importante para um elemento de aquecimento de quartzo cujo invólucro não deve ser tocado pelos dedos da mão.the user manipulates the platter or tray of the oozer food without precaution, or when washing the room. This is most important for a quartz heating element whose housing must not be touched by the fingers.

Além disso, estes fornos não satisfazem às últimas normas de segurança que exigem uma certa proteoção eléctrica e/ou mecânica do elemento de aquecimento.In addition, these ovens do not meet the latest safety standards that require some electrical and / or mechanical protection of the heating element.

Portanto, a presente invenção tem por objectivo suprimir estes inconvenientes e tornar estes fornos conformes com as normas actuais·Therefore, the present invention aims to eliminate these drawbacks and bring these furnaces into compliance with current standards.

Segundo a presente invenção, o invóluoro tubular está encerrado numa gaiola euja parede é suficientemente perfurada para deixar passar a radiação infravermelha para o interior do recinto e eficiente rígido para resistir a um eventual choque mecânico, compreendendo a referida gaiola meios de fixação na referida parede interior do recinto.According to the present invention, the tubular casing is enclosed in a cage and the wall is sufficiently perforated to let the infrared radiation pass into the enclosure and is rigid efficient to withstand any mechanical shock, said cage comprising means of fixing on said interior wall of the enclosure.

Assim, o invólucro tubular frágil fioa protegido oontra todo choque ou manipulação do utilizador e o elemento de aquecimento satisfaz assim as normas de segurança.Thus, the fragile tubular shell is protected against any shock or manipulation by the user and the heating element thus meets safety standards.

Além disso, uma outra vantagem ligada a esta protecção do invólucro é a possibilidade de o fabricante utilizar um elemento de aquecimento com invólucro de quartzo ouja espessura é vizinha de um milímetro, em vez dos dois milímetros usualmente propostos, diminuindo portanto o preço de revenda do elemento de aquecimento.In addition, another advantage related to this protection of the enclosure is the possibility for the manufacturer to use a heating element with a quartz enclosure or the thickness is close to one millimeter, instead of the two millimeters usually proposed, thus decreasing the resale price of the product. heating element.

As características e vantagens da presente invenção serão aliás evidenciadas na descrição que vai seguir-se, dada a título de exemplo, com referênciaThe characteristics and advantages of the present invention will also be evidenced in the description that will follow, given by way of example, with reference

- 2 1- 2 1

aos desenhos anexos, cujas figuras representam:attached drawings, whose figures represent:

A figura 1, um corte vertical esquemático de um aparelho para a preparação de alimentos segundo a presente invenção e que ilustra dois elementos de aquecimento encerrados respectivamente em gaiolas de proteoçãojFigure 1, a schematic vertical section of a food preparation apparatus according to the present invention and illustrating two heating elements enclosed respectively in protection cages.

A figura 2, uma vista em perspeotiva e numa escala maior de uma gaiola de protecção segundo a presente invençãoj eFigure 2 is a perspective view and on a larger scale of a protective cage according to the present invention;

A figura 3, um corte parcial vertical feito p§la linha (III-III) da figura 1, mas com a gaiola ainda não fixada definitivamente no recinto.Figure 3, a partial vertical section made by the line (III-III) of figure 1, but with the cage not yet fixed definitively in the enclosure.

aparelho para preparação de alimentos represento na figura 1 é um forno doméstico que representa um recinto para preparação de alimentos (1), que é aberto na sua face dianteira e cuja parede interior forma uma abóboda (5), a soleira (4), o fundo (5) e os dois lados (6) e (7), podendo a referida face dianteira ser fechada por uma porta (8) (esquematicamente a tracejado).The food preparation apparatus represented in Figure 1 is a domestic oven that represents a food preparation area (1), which is open on its front face and whose inner wall forms a dome (5), the sill (4), the bottom (5) and both sides (6) and (7), said front face being able to be closed by a door (8) (schematically hatched).

Este recinto de preparação dos alimen tos (1) compreende pelo menos um elemento eléctrico de aquecimento (9), que oompreende um invólucro tubular (10) de material frágil do tipo de quartzo ou vidro, que contém um fio calefactor (11) e cujas extremidades (12) e (15) estão ligadas respectivamente a dois tampSes (14) e (15) dispostos cada um numa extremidade do invólucro, estando cada tampão (14) e (15) adaptado para ser montado num suporte (16,17) solidário com o referido recinto (1) de modo avmanter o referido invólucro (10) afastado da parede interior do recinto.This food preparation enclosure (1) comprises at least one electrical heating element (9), which comprises a tubular casing (10) of fragile material of the type quartz or glass, which contains a heating wire (11) and whose ends (12) and (15) are respectively connected to two caps (14) and (15) each arranged at one end of the housing, each plug (14) and (15) being adapted to be mounted on a support (16,17) integral with said enclosure (1) so as to keep said enclosure (10) away from the interior wall of the enclosure.

Como se vê e de modo a obter um melhor aquecimento, o recinto fechado de preparação dos alimentosAs can be seen and in order to obtain better heating, the food preparation enclosure

(1) contém dois elementos de aquecimento (9) cujo invólucro tubular (10) apresenta a forma de uma barra rectilínea, sendo os tampões suportados pelos suportes (16) e (17) dispostos nos lados (6) e (7) do recinto (1) de modo a manter os dois invólucros (10) paralelos entre si e afastados da abóboda (5).(1) contains two heating elements (9) whose tubular casing (10) has the shape of a straight bar, the plugs being supported by the supports (16) and (17) arranged on the sides (6) and (7) of the enclosure (1) in order to keep the two shells (10) parallel to each other and away from the vault (5).

Os elementos (9) representados são do tipo de quartzo, mas poderiam ser do tipo de halogéneo com invólucro de vidro.The elements (9) shown are of the quartz type, but could be of the halogen type with a glass enclosure.

Segundo a presente invenção, o invólucro tubular (10) do elemento de aquecimento (9) esta encerrado numa gaiola (18) cuja parede (19) é suficientemente perfurada para deixar passar a radiação infravermelha para o interior do recinto (1), e suficientemente rígida para resistir a um eventual choque mecânico, compreendendo a referida gaiola (18) meios de fixação na parede interior do recinto. A gaiola (18) é de preferência feita de chapa e compreende uma patilha (9) de ligação à terra, destinada ser ligada eleetrieamente ao recinto (1), por exemplo por meio de um parafuso,According to the present invention, the tubular casing (10) of the heating element (9) is enclosed in a cage (18) whose wall (19) is sufficiently perforated to allow infrared radiation to pass into the enclosure (1), and sufficiently rigid to withstand eventual mechanical shock, said cage (18) means of fixing on the interior wall of the enclosure. The cage (18) is preferably made of sheet metal and comprises a grounding tab (9), intended to be electrically connected to the enclosure (1), for example by means of a screw,

A gaiola (18) apresenta a forma de uma caleira cuja parede (19) apresenta furos (30) sobrepõe-se, a uma certa distância, à parede lateral (1) do invólucro tubular (10) voltada para o interior do recinto e cujos bordos longitudinais (22,23) compreendem meios de fixação. Como melhor se vê na figura 2, os meios de fixação são formados por esporões (24) e (25), formados nos bordos longitudinais (22) e (23) da caleira, enquanto que a parede interior do recinto que forma a abóboda (3) apresenta fendas (26) adaptadas para receber os esporões (24) e (25), bem como a patilha (P) de ligação à terra.The cage (18) is shaped like a gutter whose wall (19) has holes (30) overlaps, at a certain distance, with the side wall (1) of the tubular casing (10) facing the interior of the enclosure and whose longitudinal edges (22,23) comprise fixing means. As best seen in figure 2, the fixing means are formed by spurs (24) and (25), formed on the longitudinal edges (22) and (23) of the channel, while the inner wall of the enclosure that forms the vault ( 3) has slits (26) adapted to receive the spurs (24) and (25), as well as the earthing tab (P).

Para fixar a gaiola (18) contra a abóbodâ (3) procede-se a uma deformação dos esporões (24) e (25) por torção para os levar numa direcção transversal emTo secure the cage (18) against the vault (3), the spurs (24) and (25) are deformed by twisting to take them in a transverse direction in

relação às fendas (26) (posição ilustrada a cheio na figura 1 e a tracejado na figura 5)· Depois rebate-se a patilha (P), por dobragem sobre a abóboda (3), e garante-se por meio do parafuso a ligação eléctrica à terra.in relation to the slots (26) (position shown in full in figure 1 and dashed in figure 5) · Then, the tab (P) is folded, by folding over the vault (3), and secured by means of the screw electrical grounding.

Para garantir a aplicação dos bordos (22) e (23) da caleira contra a abóboda (3) e neutralizar uma eventual folga devida ao corte industrial dos esporões e da chapa que constitui a gaiola, a parede do recinto, no caso presente a abóboda (3), compreende bossas (27) situadas respectivamente na proximidade das fendas (26) nas quais vão apoiar-se depois da torção, os referidos esporões.To guarantee the application of the edges (22) and (23) of the gutter against the vault (3) and to neutralize any gap due to the industrial cut of the spurs and the plate that constitutes the cage, the wall of the enclosure, in this case the vault (3), comprises bosses (27) located respectively in the vicinity of the slits (26) on which the said spurs will rest after twisting.

Para garantir uma oerta rigidez à gaiola (18), reduzindo no entanto minimamente a radiação infraverme lha necessária para a preparação dos alimentos, o fundo da caleira apresenta uma faixa (28) não perfurada que se estende longitudinalmente no referido invólucro, enquanto as perfurações (20) são feitas por aberturas ablongas dispostas transversalmente no invólucro tubular (10) e simetricamente em relação à referida faixa (28).In order to guarantee a proper rigidity to the cage (18), while minimally reducing the infrared radiation required for food preparation, the bottom of the channel has a non-perforated strip (28) that extends longitudinally in the said enclosure, while the perforations ( 20) are made by wide openings disposed transversely in the tubular casing (10) and symmetrically in relation to said strip (28).

Além disso, de modo a satisfazer as formas de segurança actuais, escolhe-se dar às aberturas (20) uma largura inferior e 5 mm e à distância?d entre a faee interior da ealeira e a parte lateral (21) do invólucro (10) um valor maior que 4 mm.In addition, in order to satisfy the current forms of security, it is chosen to give the openings (20) a width less than 5 mm and the distance? D between the inner faee of the ealeira and the lateral part (21) of the housing (10 ) a value greater than 4 mm.

Assim, como se compreenderá, gratas à gaiola (18) que se apoia na abóboda (3) obtem-se uma proteoção eficaz contra qualquer choque eventual e também contra as pancadas aplicadas por um aparelho de choque de mola destinado a verificar a conformidade do forno com as normas.Thus, as will be understood, thanks to the cage (18) that rests on the dome (3), an effective protection is obtained against any eventual shock and also against the bumps applied by a spring shock device designed to check the conformity of the oven. standards.

Além disso, graças a esta gaiola (18) pode reduzir-se, no caso dos invólucros de quartzo, a esIn addition, thanks to this cage (18), in the case of quartz

- 5 pessura do referido invólucro para utilizar tubos mais baratos, escolhendo-se por exemplo uma espessura de 1 mta em vez de 2 mm.- 5 weight of said casing to use cheaper tubes, for example choosing a thickness of 1 mta instead of 2 mm.

claro que poderia prever-se outras variantes de realização da gaiola sem saír do quadro dos equivalentes técnicos, tais como, por exemplo: uma gaiola única envolvendo dois invólucros paralelos, uma gaiola for· mada por uma triliça metálica ou uma chapa recortada e distendida e outros meios de fixação contra uma parede do recinto.Of course, other variants of the cage could be envisaged without departing from the framework of technical equivalents, such as, for example: a single cage involving two parallel shells, a cage formed by a metallic lattice or a cut and extended plate and other means of fixing against a wall of the enclosure.

Claims (1)

Aparelho para a preparação de alimentos tal como, por exemplo, um forno que compreende um recinto fechado para a preparação dos alimentos (1) aberto na sua face dianteira e comportando pelo menos um elemento eléctrico (9) de aquecimento que possui um invólucro tubular (10) de material frágil do tipo de quartzo ou de vidro que, contém um fio calefactor (11) e cujas extremidades (12,15) estão ligadas respeotivamente a dois tampões (14,15), cada um deles colocado numa extremidade do invólucro, estando oada tampão adaptado para ser montado num suporte (16,17) solidário com o referido recinto fechado (1) de modo a manter o referido invólucro (10) a uma certa distância da parede interna do recinto fechado, earacterizado por o invólucro tubular (10) estar encerrado numa gaiola (18) cuja parede (19) é suficientemente perfurada para deixar passar os raios infravermelhos para o interior do recinto fechado (1) e suficientemente rígido para resistir a um eventual choque mecânico, comportando a referida gaiola (18) meios de fixação (24,25) na referidaApparatus for preparing food such as, for example, an oven comprising an enclosure for preparing food (1) open on its front face and comprising at least one electrical heating element (9) which has a tubular housing ( 10) of fragile material of the type of quartz or glass which contains a heating wire (11) and whose ends (12,15) are respectfully connected to two plugs (14,15), each one placed at one end of the enclosure, the plug being adapted to be mounted on a support (16,17) integral with said enclosure (1) in order to keep said enclosure (10) at a distance from the inner wall of the enclosure, characterized by the tubular enclosure ( 10) be enclosed in a cage (18) whose wall (19) is sufficiently perforated to allow the infrared rays to pass into the enclosure (1) and sufficiently rigid to withstand any mechanical shock , comprising said cage (18) fixing means (24.25) in said - 2& Aparelho para a preparação de alimentos de acordo com a reivindicação 1, caracterizado por, no caso de o invólucro tubular (10) do elemento eléctrico (9) ter a forma de uma barra rectilínea, a gaiola (18) apresenta a forma de um algeroz cuja parede (19) apresenta perfura-* ções (20) e cobre a uma certa distância a parede lateral (21) do invólucro tubular (10) voltada para o interior do recinto fechado e cujos bordos longitudinais (22,23) compreendem os meios de fixação (24,25).- Food preparation apparatus according to claim 1, characterized in that, in the case where the tubular casing (10) of the electrical element (9) has the shape of a straight bar, the cage (18) has the shape of a gutter whose wall (19) has perforations (20) and covers, at a certain distance, the side wall (21) of the tubular casing (10) facing the interior of the enclosure and whose longitudinal edges (22,23) comprise the fastening means (24,25). - 3* Aparelho para a preparação de alimentos de acordo com a reivindicação 2, caracterizado por as perfurações (20) serem feitas por furos oblongos dispostos transversalmente no invólucro tubular (10).- Food preparation apparatus according to claim 2, characterized in that the perforations (20) are made through oblong holes arranged transversely in the tubular casing (10). - 4â Aparelho para a preparação de alimentos de acordo com a reivindicação 3, caracterizado por o fundo do algeroz apresentar uma zona (28) não perfurada que se estende longitudinalmente em relação ao invólucro tubular (10), estando os furos (20) dispostos simetricamente em relação a esta zona.Apparatus for preparing food according to claim 3, characterized in that the bottom of the gutter has a non-perforated area (28) that extends longitudinally in relation to the tubular casing (10), the holes (20) being arranged symmetrically in relation to this zone. - 50 Aparelho para a preparação de alimentos de acordo com as reivindicações 3 ou 4, caracterizado Apparatus for preparing food according to claim 3 or 4, characterized - 7 por a largura dos orifícios (20) ser menor que 5 mm e a distância d entre a face interior do algeroz e a parede lateral (21) do invólucro tubular (10) ser maior que 4 mm.- 7 because the width of the holes (20) is less than 5 mm and the distance d between the inner face of the downspout and the side wall (21) of the tubular casing (10) is greater than 4 mm. - 6â Aparelho para a preparação de alimentos de acordo com qualquer das reivindicações 2 a 5, caraeterizado por a gaiola (18) ser feita de chapa e comportar além disso uma patilha (P) de ligação à terra, destinada a ser ligada eleotricamente ao recinto fechado (1).- Apparatus for preparing food according to any of claims 2 to 5, characterized in that the cage (18) is made of sheet metal and also has a grounding tab (P), intended to be electrically connected to the enclosure closed (1). _ 7ã __ 7th _ Aparelho para a preparação de alimentos de acordo com qualquer das reivindicações 2 a 6, caraoterizado por os meios de fixação (24,25) serem formados por esporões feitos nos bordos longitudinais (22,23) do algeroz, enquanto que a parede interior do recinto fechado (1) apresenta fendas (26) adaptadas para receber os referidos esporões, sendo a gaiola (18) fixada na parede interior do recinto fechado (1) por deformação dos esporões para os levar para uma direcção perpendicular às fendas (26).Apparatus for preparing food according to any one of claims 2 to 6, caraoterized in that the fixing means (24,25) are formed by spurs made on the longitudinal edges (22,23) of the gutter, while the interior wall of the enclosure closed (1) has slits (26) adapted to receive the said spurs, the cage (18) being fixed on the inner wall of the enclosure (1) by deformation of the spurs to take them in a direction perpendicular to the cracks (26). A requerente reivindica a prioridade do pedido francês apresentado em 17 de Janeiro de 1991, sob ο N2 91 00480.The applicant claims the priority of the French application submitted on 17 January 1991, under ο N2 91 00480.
PT100019A 1991-01-17 1992-01-16 FOOD PREPARATION APPARATUS, SUCH AS A DOMESTIC FORCE PT100019B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9100480A FR2671859B1 (en) 1991-01-17 1991-01-17 COOKING APPARATUS, FOR EXAMPLE OVEN COMPRISING A PROTECTOR FOR AN ELECTRIC HEATING ELEMENT.

Publications (2)

Publication Number Publication Date
PT100019A PT100019A (en) 1994-04-29
PT100019B true PT100019B (en) 1999-02-26

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Application Number Title Priority Date Filing Date
PT100019A PT100019B (en) 1991-01-17 1992-01-16 FOOD PREPARATION APPARATUS, SUCH AS A DOMESTIC FORCE

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US (1) US5196674A (en)
EP (1) EP0495394B1 (en)
KR (1) KR100208871B1 (en)
AT (1) ATE121180T1 (en)
CA (1) CA2059509A1 (en)
DE (1) DE69201963T2 (en)
ES (1) ES2073187T3 (en)
FR (1) FR2671859B1 (en)
MX (1) MX9200191A (en)
PT (1) PT100019B (en)

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Also Published As

Publication number Publication date
US5196674A (en) 1993-03-23
FR2671859B1 (en) 1999-01-22
EP0495394A3 (en) 1992-10-14
MX9200191A (en) 1992-07-01
DE69201963T2 (en) 1995-09-07
ES2073187T3 (en) 1995-08-01
EP0495394B1 (en) 1995-04-12
KR100208871B1 (en) 1999-07-15
KR920015076A (en) 1992-08-26
EP0495394A2 (en) 1992-07-22
PT100019A (en) 1994-04-29
CA2059509A1 (en) 1992-07-18
ATE121180T1 (en) 1995-04-15
FR2671859A1 (en) 1992-07-24
DE69201963D1 (en) 1995-05-18

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